Pumping apparatus.



J. J. GROETKEN.

. PUMPING APPARATUS.

APBLIOATION IILEID MAY 29. 1911.

Patented Apr. 30, 1912.

2 SHEETS-SHEET 1.

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COLUMBIA PLANOdRAPH CO.,WASHINGTON n c J. J. GROETKEN.

PUMPING APPARATUS.

APPLIUATION FILED MAY 29. 1911.

1,025,056. Patented Apr. 30, 1912.

2 SHEETS-SHEET 2.

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UNITED STATES PATENT OFFICE.

JOSEPH J'. GROETKEN, OF TULSA, OKLAHOMA.

PUMPING APPARATUS.

Specification of Letters Patent.

Application filed May 29, 1911.

Patented Apr. 30, 1912.

Serial No. 630,073.

to which it appertains to make and use the I same.

My invention relates to new and useful improvements in pumps, and theobject of my invention is to provide an improved form of duplex pump,especially adapted for use in removing liquids from tanks and the like.

A further object of my invention is to supply an adjustable bung,whereby the pump tube may be maintained at any desired depth in thetank.

A still further object of my invention is to provide a drip pan having atelescoping drain pipe by means of which the liquid may be returned tothe tank.

With these and other objects in View my invention will be more fullydescribed, illustrated in the drawings which show a preferred embodimentof my pump, and then specifically pointed out in the claim which areattached to and form a part of this application.

In the accompanying drawings, Figure 1 is a side elevation of thecomplete pump system including the return drain. Fig. 2 is a verticalsectional view of the pump showing its interior construction. Fig. 3 isa detail section of the bung and drainage mechanism.

Referring more specifically to the drawings in which similar referencenumerals designate corresponding parts throughout, 1 designates the maincasing or body portion of the pump which is preferably elliptical inform and which tapers at its lower end to form the cylindrical throatportion 2 through which extends the tapped bore 3 in which is threadedthe upper end of pump tube 1. The upper portion of this casing isprovided with an outwardly extending flange 5 the upper face of which ismachined to furnish a seat for the upper part of the pump casing. Apartition member 6 extends completely across the casing adjacent thelower part thereof and this member is further provided with the upwardlyextending medial wall 7, said wall and partition being preferably formedintegrally with the casing itself. This wall and partition are sopositioned and shaped as to form cylindrical chambers 8 and 9 in whichthe pump pistons are adapted to act. lower portion of each of thesechambers is providedwith a valve seat 10, upon which is seated the valve11, said valves being slidable upon the valve stems 12 which extendupwardly through the valve seats and valves The and are providedadjacent their upper end with cross pins 13 and surrounding the valvestems between the pins 13 and the valves are the helical compressionsprings 14 which normally maintain the valves in closed posi- .tion.

The upper portion of the valve casing consists of two parts, 15 and 16,the lower portions of which are machined as at 17 and provided withflanges 18 adapted to be seated upon the upper machined portion of thevalve casing proper and to be secured thereto by means of the bolts 19.The abutting edge portion of the casing'members 15 and 16 are alsoprovided with outwardly extending flanges 20, which flanges are alsomachine spaced and secured together by means of bolts 21. The casingmember 16 as shown in the drawings, is provided with a downwardlyextending arm 22 formed in tegrally with the casing, and provided at itslower extremity with a half bearing 23, said half bearing co-acting witha half bearing 24 to form a central bearing for the crank shaft 25, theend 26 of which is suitably journaled in a bearing formed in the innerportion of the wall casings 15 and 16. The other end 27 of thecrankshaft 25 extends completely through the casing, being journaled ina bearing 28 formed in the walls thereof, and secured upon the end ofthe crank shaft by means of the set bolt 29 is a hand crank 30/ As bestshown in Fig. 2 of the drawings the crankshaft 25 is provided with theoppositely directed crank members 31 and 32 upon the wrist pins of whichare rotatably mounted the piston rods 33 and 34 respectively. Rotatablymounted upon the lower end of the piston rod 33' is a yoke member 35 thelower end of which carries a valve cup 36 provided with a valve 37identical in construction with the valves 11 previously described. Thelower end of the piston rod 34: is connected in a similar manner bymeans of the yoke 38 with a valve cup 39 having a valve 40. As shown,these valve cups are so formed as to fit closely in the cylindricalchambers S and 9 and thus form the pump piston, and it will also be seenthat these pistons will operate in opposite phases. The casing member 15is provided adjacent its lower portion with a tapped opening in which isthreaded the cutoff valve 41, and it will be seen that if this cutoff isclosed when the pump is not in action it will materially assist thevalves of the pump in preventing the liquid already in the pump casingfrom running back into the tank.

In many cases it is desirable in removing a liquid from a tank, keg orother receptacle, to remove the same, a portion at a time, with aslittle disturbance of the remainder as possible in order to avoiddrawing impurities which may have settled at the bottom of thereceptacle. To do this it is necessary that the pump tube extenddownwardly into the upper portion of the liquid only and that means beprovided for gradually lowering the same as the liquid is drawn off.

In order to provide for this I have con-.

structed an improved form of adjustable bung, which as shown in thedrawings s practically identical with the bung of ordinary constructionexcept that its bore is somewhat greater than the outer diameter of thepump tube. This bung which as a whole is designated by the numeral 42,is threaded into the keg in the customary mannor, the upper portion ofthe bung being provided with angular faces 43 adapted to be engaged by awrench. The pump tube is then passed through the bung the requireddistance and secured in place by means of the set bolt 44:, and it willreadily be seen that by means of this bolt the pump may be adjusted sothat the tube will extend into the liquid to any desired extent. Byforming the bore of the bung somewhat larger in diameter than the otherdiameter of the pump tube a drainage space is provided between the twothe full purpose of which will be hereinafter more fully explained.

Slidably mounted upon the pump tube intermediate the bung and pump is abracket 45 provided with a set bolt 46 by means of which it may besecured upon the tube in adjusted position. Securely mounted upon thearm 47 of this bracket is a sup porting base as, preferably formed ofchannel metal and adapted to support a drip pan 49, which pan ispreferably formed of a non-corrosive metal such as galvanized iron.Leading from this pan is a drain pipe 50, which as shown is formed of aplurality of telescoping pipe members 51, each of which preferablytelescopes into the one beneath whereby all leakage is avoided. Thispipe terminates at its lower end in an elbow 52 from which extends ahorizontal pipe 53 upon the free end of which is threaded a casing 54-which forms the drainage chamber. The upper portion of this drainagechamber as best shown in Fig. 3 of the drawings is provided with a bore55 through which the pump tube extends said bore being preferablyprovided with some form of packing to form a tight joint with the tube4. The lower portion of the drainage chamber terminates in a collarmember 56 which engages loosely about the pump tube and which extendsdownwardly Within the annular flange 57 of the bung, thus forming afluid proof joint. This flange 57 is provided with one or more wingbolts 59 by means of which it may be adjustably secured to the collar.

The operation'of the pump will be readily understood and therefore needsno description. In filling a vessel by means of my improved pump anyoverflowing liquid will be caught in the drip pan and will flow downthrough the drain pipe into the drainage chamber and from there by meansof the drainage space between the bung and pump tube into the tank.

As will be readily understood from the above description I have provideda pump especially adapted for removing liquids from tanks and the likeand provided With an adjustable bung, whereby the pump tube may bemaintained at any desired depth in the liquid. I have also provided adrip pan having a drain pipe leading to a drainage chamber carried bythe pump tube, whereby any overflowing liquid will be returned directlyto the tank. By forming the drain pipe a telescoping member it ispossible to raise and lower the pump tube without readjusting thebracket which supports the drip pan.

It will be seen that the drainage system also furnishes the necessarymeans for supplying air to the tank to take the place of the liquidwithdrawn, and if at any time it is desirable to temporarily close thetank from the air the same may be accomplished by closing the entranceto the drain pipe.

This device is simple and economical in construction easily operated andpossesses many advantages over the pump constructions now in use.

What I claim is In a pump, the combination with a lower casing havingpiston chambers formed therein, and pistons operating in said chambers,of an upper sectional casing mounted upon said lower casing, means forsecuring said sectional casing to said lower casing, said sectionalcasing comprising two members provided with flanges upon their abuttingedges for securing the same together, the abutting edges of saidsections being provided with alined half bearings registering with eachother to form complete bearings when said sections are joined together,a crank shaft mounted in said bearings, connecting rods between saidcrank shaft and said pistons for operating the same, and an arm formedat the upper edge of one of said sections and depending downwardly intosaid upper casing, said arm having a bearing formed at its free end toprovide a central bearing for said crank shaft whereby to renderadditional support to said crank shaft, and to retain the same in thesaid half bearings of one section when the complement section is removed.

In testimony whereof, I afiix my signature, in presence of twowitnesses.

JOSEPH J. GROETKEN.

Witnesses:

MILDRED HANsEL, G. H. STRATToN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. G.

